In my original post I attempted to supply a link to some info about these "cities", but the link was being blocked.
From theme park tourist . com (no spaces)
Disney government and secret cities
Walt Disney was no dummy. He learned valuable lessons from
Disneyland, and he was determined to make his next project even better. Yet he chose to locate the Florida Project on swampland in the middle of nowhere. With the nearest power lines 15 miles away, the two counties whose borders the property saddled were not interested in paying the costs of developing the land. So Walt cut a highly unorthodox deal with the state of Florida, and the Reedy Creek Improvement District (RCID) was born.
As a special taxing district, RCID took sole responsibility for developing the property. Its creation also gave Disney the ability to bypass most of the normal permitting processes and rush projects through to completion—a power that came in very handy when Disney decided to beat Universal to the punch by opening its own movie park a year ahead of Universal Orlando.
Yet state lawmakers were concerned about giving a for profit company too much autonomous control. Disney needed voters and council representatives from at least two cities to handle the decisions that are typically managed at the city and county levels. At that time, Walt's Experimental Prototype Community of Tomorrow (EPCOT) was planned to include a massive residential area, so the idea of people living and voting at Walt Disney World was far from outlandish. The company quickly founded two tiny company towns, or neatly kept mobile home parks to be more accurate, and stocked them with employees of Walt Disney World or RCID.
Although EPCOT was significantly scaled down to become a theme park (EPCOT Center) and the plan for wide-scale residential living scrapped, the two towns were an integral and legal part of Disney’s governmental structure. So they were allowed to remain, effectively frozen in time. Today, their combined population is just 44. Each family owns its own mobile home, but pays Disney $75 per month in lot rent.
The towns, known as Bay Lake and Lake Buena Vista, are hidden in plain sight—not marked on any public guide map, and located on property that is technically backstage. Residents do get one major benefit, though. They have access to a gated, private fireworks viewing spot on the shores of Bay Lake.
Much less secret are the other places where Disney cast members can live—the apartment complexes used for the Disney College Program and the Disney International Program. Each year, thousands of college students and international cultural representatives head to Walt Disney World to spend a few months to a year Living, Learning, and Earning. They work front-line jobs around the complex, take classes if desired, and live in apartments that hold two to eight people. It’s a great way for students to develop independence, learn to get along with a diverse group of roommates and coworkers, and gain job experience from a highly renowned employer.